Supporter

ABSTRACT

A supporter includes a housing and a guide member formed at one side of the housing. The guide member has an inclined surface. A fixing member faces the guide member to fix an object and a transmission coil is disposed in the housing to wirelessly transmit power.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority under 35 U.S.C. § 119 to KoreanApplication Nos. 10-2013-0106833 and 10-2013-0106834, both filed on Sep.5, 2013, whose entire disclosures are hereby incorporated by reference.

BACKGROUND

1. Field

The embodiment relates to a supporter capable of supporting and chargingan object.

2. Background

Recently, studies and research has been actively conducted on a wirelesspower transmission (or wireless energy transfer) technique of wirelesslytransferring electric energy to a desired device. In order to utilizesuch a wireless power transmission technique, a transmitter end fortransmitting wireless power and a receiver end for receiving wirelesspower transmitted may be provided.

The transmitter end may be provided in a case (hereinafter, referred toas a supporter) and the receiver end may be provided in a wirelessterminal. Thus, the wireless power transmitted from the transmitter endof the supporter is received at the receiver end, such that the wirelessterminal is charged.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments will be described in detail with reference to thefollowing drawings in which like reference numerals refer to likeelements wherein:

FIG. 1 is a block diagram showing a wireless power transmission systemaccording to an embodiment.

FIG. 2 is an equivalent circuit diagram of the transmission inductioncoil according to an embodiment.

FIG. 3 is an equivalent circuit diagram of the power source and thewireless power transmitter according to an embodiment.

FIG. 4 is an equivalent circuit diagram of the wireless power receiveraccording to an embodiment.

FIG. 5 is a side perspective view showing a wireless terminal supporteraccording to the embodiment.

FIG. 6 is a front perspective view showing a wireless terminal supporteraccording to the embodiment.

FIG. 7 is a side perspective view showing a wireless terminal beinginserted into a wireless terminal supporter according to the embodiment.

FIG. 8 is a side perspective view showing a wireless terminal that hasbeen inserted into a wireless terminal supporter according to theembodiment.

FIG. 9 is a front perspective view showing a wireless terminal that hasbeen inserted into a wireless terminal supporter according to theembodiment.

FIG. 10 is an exploded perspective view showing a wireless terminalsupporter according to the embodiment.

DETAILED DESCRIPTION

In the description of embodiments, it will be understood that when onecomponent is referred to as being ‘on (above)’ or ‘under (below)’another component, the terminology of ‘on (above)’ and ‘under (below)’includes both the meanings of ‘directly’ and ‘indirectly’. Further, themeaning of ‘on’ and ‘under’ each layer includes not only an upperdirection, but also a lower direction.

Prior to explaining a supporter, a system reflecting the overall systemof wireless power transmission will be described.

FIG. 1 is a block diagram showing a wireless power transmission systemaccording to an embodiment. Referring to FIG. 1, the wireless powertransmission system may include a power source 100, a wireless powertransmitter 200, a wireless power receiver 300 and a load 400.

The power source 100 may be included in the wireless power transmitter200, but the embodiment is not limited thereto. The wireless powertransmitter 200 may include a transmission induction coil 210 and atransmission resonant coil 220. The wireless power receiver 300 mayinclude a reception resonant coil 310, a reception induction coil 320and a rectifying circuit 330. Both terminals of the power source 100 maybe connected to both terminals of the transmission induction coil 210.

The transmission resonant coil 220 may be spaced apart from thetransmission induction coil 210 by a predetermined distance. Thereception resonant coil 310 may be spaced apart from the receptioninduction coil 320 by a predetermined distance.

Both terminals of the reception induction coil 320 may be connected toboth terminals of the rectifying circuit 330, and the load 400 may beconnected to both terminals of the rectifying circuit 330. According toan embodiment, the load 400 may be included in the wireless powerreceiver 300.

The power generated from the power source 100 is transmitted to thewireless power transmitter 200. The power received in the wireless powertransmitter 200 is transmitted to the wireless power receiver 300 thatmakes resonance with the wireless power transmitter 200 due to aresonance phenomenon, that is, has the resonance frequency the same asthat of the wireless power transmitter 200.

The power source 100 may generate AC power having a predeterminedfrequency and may transmit the AC power to the wireless powertransmitter 200. The transmission induction coil 210 and thetransmission resonant coil 220 may be inductively coupled with eachother. In other words, if AC current flows through the transmissioninduction coil 210 due to the power received from the power source 100,the AC current may be induced to the transmission resonant coil 220physically spaced apart from the transmission induction coil 210 due tothe electromagnetic induction.

Thereafter, the power received in the transmission resonant coil 220 maybe transmitted to the wireless power receiver 300, which makes aresonance circuit with the wireless power transmitter 200, throughresonance. Power may be transmitted between two LC circuits which areimpedance-matched with each other through resonance. The powertransmitted through the resonance can be farther transmitted with higherefficiency when comparing with the power transmitted by theelectromagnetic induction.

The reception resonant coil 310 may receive power transmitted from thetransmission resonant coil 220 through the frequency resonance. The ACcurrent may flow through the reception resonant coil 310 due to thereceived power. The power received in the reception resonant coil 310 istransmitted to the reception induction coil 320, which is inductivelycoupled with the reception resonant coil 310, due to the electromagneticinduction. The power received in the reception induction coil 320 may berectified by the rectifying circuit 330 and transmitted to the load 400.

The transmission induction coil 210, the transmission resonant coil 220,the reception resonant coil 310, and the reception induction coil 320may have one of spiral and helical structures, but the embodiment is notlimited thereto. The transmission induction coil 210 and the receptionresonant coil 310 may be resonantly coupled with each other to enablepower to be transmitted at a resonance frequency. Since the transmissionresonant coil 220 is resonantly coupled with the reception resonant coil310, the power transmission efficiency between the wireless powertransmitter 200 and the wireless power receiver 300 may be significantlyimproved.

As described above, the wireless power transmission system whichtransmits power in a resonant frequency scheme has been described. Theembodiment may be applied to power transmission of an electromagneticinduction scheme as well as a resonant frequency scheme. According to anembodiment, when the wireless power transmission system transmits powerbased on electromagnetic induction, the transmission resonant coil 220included in the wireless power transmitter 200 and the receptionresonant coil 310 included in the wireless power receiver 300 may beomitted.

A quality factor and a coupling coefficient are important in thewireless power transmission. That is, the power transmission efficiencymay be proportional to each of the quality factor and the couplingcoefficient. Thus, as at least one of the quality factor and thecoupling coefficient is increased, the power transmission efficiency maybe improved. The quality factor may refer to an index of energy that maybe stored in the vicinity of the wireless power transmitter 200 or thewireless power receiver 300.

The quality factor may vary according to the operating frequency ω aswell as a shape, a dimension and a material of a coil. The qualityfactor may be expressed as following equation 1:Q=w*L/R  [Equation 1]

Where L refers to the inductance of a coil and R refers to resistancecorresponding to the quantity of power loss caused in the coil.

The quality factor may have a value of 0 to infinity. When the qualityfactor has a greater value, the power transmission efficiency betweenthe wireless power transmitter 200 and the wireless power receiver 300may be more improved.

The coupling coefficient represents the degree of inductive magneticcoupling between a transmission coil and a reception coil, and has avalue of 0 to 1. The coupling coefficient may vary according to therelative position and the distance between the transmission coil and thereception coil.

FIG. 2 is an equivalent circuit diagram of the transmission inductioncoil according to an embodiment. As shown in FIG. 2, the transmissioninduction coil 210 may include an inductor L1 and a capacitor C1, and acircuit having a desirable inductance and a desirable capacitance can beconstructed by the inductor L1 and the capacitor C1.

The transmission induction coil 210 may be constructed as an equivalentcircuit in which both terminals of the inductor L1 are connected to bothterminals of the capacitor C1. In other words, the transmissioninduction coil 210 may be constructed as an equivalent circuit in whichthe inductor L1 is connected to the capacitor C1 in parallel.

The capacitor C1 may include a variable capacitor, and impedancematching may be performed by adjusting the capacitance of the capacitorC1. The equivalent circuits of the transmission resonant coil 220, thereception resonant coil 310 and the reception induction coil 320 may beequal or similar to the circuit shown in FIG. 2, but the embodiment isnot limited thereto.

FIG. 3 is an equivalent circuit diagram of the power source and thewireless power transmitter according to an embodiment. As shown in FIG.3, the transmission induction coil 210 and the transmission resonantcoil 220 may be constructed by using inductors L1 and L2 and capacitorsC1 and C2 having predetermined inductances and capacitances,respectively.

FIG. 4 is an equivalent circuit diagram of the wireless power receiveraccording to an embodiment. As shown in FIG. 4, the reception resonantcoil 310 and the reception induction coil 320 may be constructed byusing inductors L3 and L4, and capacitors C3 and C4 having predeterminedinductances and capacitances, respectively.

The rectifying circuit 330 may convert AC power transferred from thereception induction coil 320 into DC power and may transfer the DC powerto the load 400. In detail, although not shown, the rectifying circuit330 may include a rectifier and a smoothing circuit. According to theembodiment, the rectifying circuit may include a silicon rectifier andas shown in FIG. 4, may be equivalent to a diode D1, but the embodimentis not limited thereto. The rectifier may convert AC power transferredfrom the reception induction coil 320 into DC power.

The smoothing circuit may remove AC components included in the DC powerconverted by the rectifier to output a smoothed DC power. According toan embodiment, as shown in FIG. 4, a rectifying capacitor C5 may be usedas the smoothing circuit, but the embodiment is not limited thereto. TheDC power transferred from the rectifying circuit 330 may be DC voltageor current, but the embodiment is not limited thereto.

The load 400 may be an arbitrary rechargeable battery or a devicerequiring the DC power. For example, the load 400 may refer to abattery. The wireless power receiver 300 and the load 400 may beincluded in a wireless terminal 5 or an electronic apparatus.

For example, the wireless terminal 5 may include a smart phone or atablet PC. The electronic apparatus may be a device, such as a mouse ora keyboard, requiring charged power. Thus, the reception resonant coil310 and the reception induction coil 320 may have shapes correspondingto the shape of an electronic appliance.

The wireless power transmitter 200 may exchange information with thewireless power receiver 300 through in-band or out-of-bandcommunication. The in-band communication may refer to the communicationfor exchanging information between the wireless power transmitter 200and the wireless power receiver 300 by using a signal having a frequencyused in the wireless power transmission. To this end, the wireless powerreceiver 300 may further include a switch and may receive the powertransmitted from the wireless power transmitter 200 through a switchingoperation of the switch or not. Thus, the wireless power transmitter 200detects an amount of power consumed in the wireless power transmitter200, so that the wireless power transmitter 200 may recognize an on oroff signal of the switch included therein.

In detail, the wireless power receiver 300 may change an amount of powerdissipated in a resistor by using the resistor and a switch, so that thepower consumed in the wireless power transmitter 200 may be changed. Thewireless power transmitter 200 may sense a change of the consumed powerto obtain information about a state of the wireless power receiver 300.The switch and the resistor may be connected in series to each other.The information about a state of the wireless power receiver 300 mayinclude information about a current charged amount and/or the change ofcharged amount of the wireless power receiver 300.

When the switch is opened, the power dissipated in the resistor is 0(zero) and the power consumed in the wireless power transmitter 200 isalso reduced. If the switch is shorted, the power absorbed in theresistor is more than 0 and the power consumed in the wireless powertransmitter 200 is increased. While the wireless power receiver repeatsthe above operation, the wireless power transmitter 200 may detect thepower consumed in the wireless power transmitter 200 and may performdigital communication with the wireless power receiver 300.

The wireless power transmitter 200 receives the information about thestate of the wireless power receiver 300 according to the aboveoperation, so that the wireless power transmitter 200 may transmit thepower suitable to the reception state of the wireless power receiver300.

To the contrary, the wireless power transmitter 200 may include aresistor and a switch to transmit the information about the state of thewireless power transmitter 200 to the wireless power receiver 300.According to one embodiment, the information about the state of thewireless power transmitter 200 may include information about the maximumamount of power to be supplied from the wireless power transmitter 200,the number of wireless power receivers 300 receiving the power from thewireless power transmitter 200 and the amount of available power of thewireless power transmitter 200.

The out-of-band communication refers to the communication performedthrough a specific frequency band other than the resonance frequencyband in order to exchange information necessary for the powertransmission. The wireless power transmitter 200 and the wireless powerreceiver 300 can be equipped with out-of-band communication modules toexchange information necessary for the power transmission. Theout-of-band communication module may be installed in the power supplydevice. In one embodiment, the out-of-band communication module may usea short-distance communication technology, such as Bluetooth, ZigBee,WLAN or NFC, but the embodiment is not limited thereto.

FIG. 5 is a side perspective view showing a wireless terminal supporteraccording to the embodiment. FIG. 6 is a front perspective view showinga wireless terminal supporter according to the embodiment. Referring toFIGS. 5 and 6, the wireless terminal supporter may include a housing 1and a fixing member 3. Although the embodiment is described whilefocusing on a wireless terminal supporter, the supporter of theembodiment may be applied to various objects to be supported andcharged. For example, the object may include a battery, an electronicappliance and a home appliance which are required to be supported andcharged, as well as a wireless terminal.

The housing 1 may have a rectangular shape when viewed at a front sidethereof, but the embodiment is not limited thereto. The wirelessterminal 5 may have a rectangular shape and a round-shaped edge, but theembodiment is not limited thereto. Thus, the wireless terminal 5 mayhave a wide width and a narrow width. A height h of the housing 1 may beat least longer than the narrow width of the wireless terminal 5 and awidth w of the housing 1 may be at least wider than the wide width ofthe wireless terminal 5, but the embodiment is not limited thereto.

The power source 100 and the wireless power transmitter 200 shown inFIGS. 1 to 4 may be included in the wireless terminal supporter. Thepower source 100 and the wireless power transmitter 200 may be installedin the housing 1. The wireless power receiver 300 and the load 400 shownin FIGS. 1 to 4 may be installed in the wireless terminal 5.

Wireless power may be transmitted through the power source 100 and thewireless power transmitter 200 of the wireless terminal supporter. Inthis case, when the wireless terminal 5 approaches the wireless terminalsupporter in a distance at which the wireless terminal 5 can receive thewireless power, the wireless power provided from the wireless powertransmitter 300 may be received by the wireless power receiver 300 ofthe wireless terminal 5 so that the wireless power may be provided tothe load 400. The load 400 may be a chargeable device such as a batteryof the wireless terminal 5.

A guide member 7 may be disposed to face the fixing member 3. The guidemember 7 may be formed on a front surface of the housing 1 facing thefixing member 3. The guide member 7 may have an inclined surfaceinclined at 5° or more about a normal line, but the embodiment is notlimited thereto.

Since the wireless terminal 5 and the guide member 7 of the housingfacing each other make contact with each other, the wireless terminal 5may be inclined at 5° or more about a normal line. Since the wirelessterminal 5 is stably maintained by the guide member 7 of the housing 1,the wireless terminal 5 is not shaken.

Although not shown, an absorption member is formed on a surface of theguide member 7 of the housing 1 making contact with the wirelessterminal 5, so that the wireless terminal 5 placed on the guide member 7may be stably maintained without any shake. For example, the absorptionmember may be formed of a resin material or a plastic material, but theembodiment is not limited thereto. For example, a plurality ofprotrusions may be formed on the surface of the absorption memberthrough an embossing process, but the embodiment is not limited thereto.

In addition, in order to more firmly fix the wireless terminal 5, thefixing member 3 may be used. At least one portion of the fixing member 3may basically make contact with the guide member 7 of the housing 1. Asshown in FIG. 7, if the wireless terminal 5 is inserted between thefixing member 3 and the guide member 7 of the housing 1, the wirelessterminal 5 may fall downwardly between the guide member 7 of the housing1 and the fixing member 3 while the fixing member 3 is pushed away fromthe guide member 7 of the housing 1.

As shown in FIGS. 8 and 9, the wireless terminal 5 that falls downwardmay be securely mounted on a secure member 35 of the housing 1. A shapeformed by the guide member 7 and the secure member 35 may correspond toa shape formed by rear and side surfaces of the wireless terminal 5.That is, when the rear and side surfaces of the wireless terminal 5 hasa vertical shape, the secure member 35, that is, a top surface of thesecure member 35 may be perpendicular to the guide member 7. Thewireless terminal 5 may be stably maintained and fixed without any shakedue to the inclination of the guide member 7, the secure member 35 andthe fixing member 3.

When wireless power is provided from the wireless power receiver 200installed in the housing 1 to the wireless terminal 5 securely mountedon the secure member 35 of the housing 1, the wireless power is receivedby the wireless power receiver 300 installed in the wireless terminal 5and is provided to the load 400, so that the load 400, that is, thebattery may be charged.

If the wireless power receiver 300 is included in the battery, thebattery instead of the wireless terminal 5 is directly mounted on thesecure member 35 of the housing 1 such that the battery may be charged.According to the embodiment, not only the battery, but also the wirelessterminal 5 equipped with the battery can be mounted and charged.

As described above, at least one of the quality factor and the couplingcoefficient must be increased to improve the power transmissionefficiency between the wireless power transmitter 200 and the wirelesspower receiver 300. Although several conditions may be set to improvethe power transmission efficiency, the transmission coil 210 or 210 and220 of the wireless power transmitter 200 must face the reception coil320 or 310 and 320 in parallel with each other. The transmission coil210 or 210 and 220 of the wireless power transmitter 200 installed inthe housing 1 may be disposed in parallel with the guide member 7 of thehousing 1.

FIG. 10 is an exploded perspective view showing a wireless terminalsupporter according to the embodiment. Referring to FIG. 10, thewireless terminal supporter according to the embodiment may include ahousing 1 and a fixing member 3.

The housing 1 may include a first case 33 and a second case 75 coupledto the first case 33. The first case 33 may include a secure member 35formed in a lower portion thereof and a guide member 7 inclined to thesecure member 35. The secure member 35 and the guide member 7 may beformed integrally with each other through a molding process, but theembodiment is not limited thereto. A rear surface of the wirelessterminal 5 may lean against the guide member 7 and may be securelymounted on the secure member 35.

A buffer member 45 may be disposed on the secure member 35. That is, thebuffer member 45 may be attached to a top surface of the secure member35. When the buffer member 45 is securely mounted on the buffer member45, the buffer member 45 prevents the wireless terminal 5 from slidingso that the wireless terminal 5 may be prevented from shaking. Thebuffer member 45 may be formed of a resin material such as epoxy havingelasticity or a rubber material, the embodiment is not limited thereto.

A plurality of grooves may be formed on the top surface of the buffermember 45, for example, in one direction, but the embodiment is notlimited thereto. The grooves or protrusions may further restrain thewireless terminal 5 from shaking. The buffer member 45 may have a shapecorresponding to a shape of a top surface of the secure member 35, butthe embodiment is not limited thereto.

A first recess 37 may be provided in a central portion of the securemember 35. The first recess 37 may have a shape recessed from one sidesurface of the secure member 35 toward the guide member 7. The securemember 35 may include second and third recesses 42 and 43 formed at bothsides of the first recess 37. The second and third recesses 42 and 43may have the shapes recessed downwardly.

The secure member 35 may include a first side wall 81 disposed in thefirst and second recesses 37 and 42 and a second side wall 83 disposedin the first and third recesses 37 and 43. First and second holes 39 and41 may be formed on the first and second side walls 81 and 83,respectively. The first recess 37 may communicate with the second andthird recesses 42 and 43 through the first and second holes 39 and 41.

A recess having a shape equal to that of the first recess 37 of thesecure member 35 may be formed at the center of the buffer member 45. Asthe buffer member 45 is attached to the secure member 35, upper portionsof the second and third recesses 42 and 43 of the secure member 35 maybe closed.

The fixing member 3 is connected to the secure member 35 such that thefixing member may rotatably move. The fixing member 3 may include firstand second supports 11 and 13, first and second rotation shafts 19 and21, a pressing part 25 and an inlet part 27. The pressing part 25 mayextend from the first and second supports 11 and 13. In other words, thefirst and second supports 11 and 13 may be branched from the pressingpart 25. Thus, an opening 30 may be formed by the pressing part 25 andthe first and second supports 11 and 13.

For example, the first and second supports 11 and 13 branched from thepressing part 25 may be gradually spaced apart from each other in thedownward direction and then gradually closed to each other. Due to sucha shape, the strength of the fixing member 3 is fully concentrated onthe wireless terminal 5 so that the wireless terminal 5 may be firmlyfixed, and the contact area of the pressing part 25 and the first andsecond supports 11 and 13 with respect to the wireless terminal 5 may bemaximized so that the wireless terminal 5 may be securely fixed.

An interval between low portions of the first and second supports 11 and13 may be less than a diameter of the opening 30. The interval betweenlow portions of the first and second supports 11 and 13 may be less thana width of the first recess 37 of the secure member 35, that is, aninterval between the first and second side walls 81 and 83. Thus, firstand second connecting members 15 and 17, which extend from the lowportions of the first and second supports 11 and 13, may be insertedinto the first recess 37 between the first and second side walls 81 and83 of the secure member 35.

The first and second connecting members 15 and 17 may extend from thefirst and second supports 11 and 13 toward the guide member 7. The firstand second connecting members 15 and 17 may allow the first and secondrotation shafts 19 and 21 to be connected to the first and secondconnecting members 15 and 17, respectively. That is, the firstconnecting member 15 may extend from the first support 11 and the firstrotation shaft 19 may extend from the first connecting member 15. Thesecond connecting member 17 may extend from the second support 13 andthe second rotation shaft 21 may extend from the second connectingmember 17.

The first and second rotation shafts 19 and 21 may extend from one endsof the first and second connecting members 15 and 17 such that the firstand second rotation shafts 19 and 21 are gradually spaced apart fromeach other. For example, the first rotation shaft 19 may extend from oneend of the first connecting member 15 in the left direction when viewedat a front side, and the second rotation shaft 21 may extend from oneend of the second connecting member 17 in the right direction.

The rotation shaft 19 may extend into the second recess 42 such that thefirst rotation shaft 19 passes through the first hole 39 formed in thefirst side wall 81 of the secure member 35. The second rotation shaft 21may extend into the third recess 43 such that the second rotation shaft21 passes through the second hole 41 formed in the second side wall 83of the secure member 35.

First and second contact parts 23 may extend from each of the first andsecond rotation shafts 19 and 21. The first and second contact parts 23may extend downwardly from one ends of the first and second rotationshafts 19 and 21, respectively, but the embodiment is not limitedthereto.

First and second contact parts 23 make contact with first and secondelastic members 28 and 29 so that the first and second contact parts 23are always subject to restoring force by the first and second elasticmembers 28 and 29, so the first and second contact parts 23 may tend tomove away from the guide member 7. The first and second elastic members28 and 29 may be springs, but the embodiment is not limited thereto.

When the first and second contact parts 23 moves away from the guidemember 7 due to the restoring force so that the first and secondrotation shafts 19 and 21 are rotated clockwise, the first and secondsupports 11 and 13, the pressing part 25 and the inlet part 27, whichare connected to the first and second rotation shafts 19 and 21, maymove in the direction opposite to the first and second contact parts 23,that is, toward the guide member 7.

If the wireless terminal 5 is inserted between the guide member 7 andthe inlet part 27, the inlet part 27 may move away from the guide member7 by the wireless terminal 5. When the first and second rotation shafts19 and 21 are rotated counterclockwise as the inlet part 27 moves, thefirst and second contact parts 23 connected to the first and secondrotation shafts 19 and 21 is forcibly moved to approach the guide member7, so that the first and second elastic members 28 and 29 may becompressed by each of the first and second contact parts 23. However,since the restoring force is still applied to the first and secondcontact parts 23 by the first and second elastic members 28 and 29,torque that allows the first and second rotation shafts 19 and 21 to berotated clockwise is generated and is mostly transferred to the firstand second supports 11 and 13, the pressing part 25 and the inlet part27, so that the first and second supports 11 and 13, the pressing part25 and the inlet part 27 (specifically, the pressing part 25) may pressa part of the top surface of the wireless terminal 5 and the pressingstate may continue until the wireless terminal 5 is detached from thehousing 1.

The inlet part 27 is disposed to face the guide member 7. As the inletpart 27 moves upwardly, the inlet part 27 may move to be away from theguide member 7. In other words, the inlet part 27 may extend from thepressing part 25 and may be bent to be gradually away from the guidemember 7.

The fixing member 3 may include the buffer member 31 for preventing ascratch which may be generated when the fixing member 3 makes contactwith the wireless terminal 5. The buffer member 31 may be attached to aninside surface of the fixing member 3. In detail, the buffer member 31may be attached at least to an inside surface of the pressing part 25.The buffer member 31 may be attached onto the entire region of thepressing part 25 and a region of the inlet part 27. The buffer member 31may include one of a resin material, a rubber material and a plasticmaterial, but the embodiment is not limited thereto.

A printed circuit board 65, a heat sink 61 and a transmission coil 210or 210 and 220 may be disposed between the first and second cases 33 and75. An electronic device 69 such as a power source 100 or a control unitmay be mounted on the printed circuit substrate 65.

The electronic device 69 may be disposed on a rear surface of theprinted circuit substrate 65 such that the electronic device 69 faces aninner surface of the second case 75. As the electronic device 69 isdisposed as described above, an effect of a magnetic field generatedfrom the transmission coil 210 or 210 and 220 may be minimized. Inaddition, as the electronic device 69 is disposed as described above,the heat sink 61 and the printed circuit board 65 make contact with eachother, such that the heat generated from the transmission coil 210 or210 and 220 and transferred to the heat sink 61 may be transferred tothe printed circuit board 65, thereby improving the thermal dissipationefficiency.

The wireless power transmitter 200 may be configured with the controlunit and the transmission coil 210 or 210 and 220. The power source 100may be included in the wireless power transmitter 200.

The control unit may control the entire wireless power transmission. Forexample, the control unit may adjust a quantity of wireless power to betransmitted to the wireless power receiver 300 provided to the wirelessterminal 5, may process a follow-up action based on information about acharged state of the wireless power receiver 300, or may controlwireless communication between the wireless transmitter 200 and thewireless power receiver 300, but the embodiment is not limited thereto.

The printed circuit board 65 may include at least one opening 67. Forexample, the opening 67 may be formed at a center of the printed circuitboard 65, but the embodiment is not limited thereto. The size of theopening 67 may be equal to or greater than that of the protrusion member77 of the second case 75 which will be described below, the embodimentis not limited thereto. The size of the opening 67 may vary with thesize of the protrusion member 77.

The opening 67 may have a rectangular shape, but the embodiment is notlimited thereto. At least one opening 67 formed in the printed circuitboard 65 may have mutually different sizes and/or shapes.

The electronic device 69 may be mounted on the printed circuit board 65except for the opening 67. A connector 63 may be connected to one sideof the printed circuit board 65. The connector 63 may transfer a signalfrom an outside to the electronic device 69 or a signal from theelectronic device 69 to an outside.

The transmission coil 210 or 210 and 220 may be disposed on the topsurface of the printed circuit board 65. The transmission coil 210 or210 and 220 may generate wireless power to transmit the wireless powerto the wireless terminal 5. As described above, the wireless powertransmission scheme may include an electromagnetic induction scheme andresonant frequency scheme.

A magnetic substrate 59 may be disposed between the printed circuitsubstrate 65 and the transmission coil 210 or 210 and 220. The magneticsubstrate 59 may include a magnetic substance of a ferrite, but theembodiment is not limited thereto. The magnetic substrate 59 may be amagnetic substance in itself or may include a substrate and a magneticsubstance disposed on the substrate. The magnetic substrate 59 mayprevent the magnetic field generated from the transmission coil 210 or210 and 220 from exerting an influence on an electronic device.

The transmission coil 210 or 210 and 220 may be attached on the magneticsubstrate 59. For example, the magnetic substance may be attached on thesubstrate, the transmission coil 210 or 210 and 220 may be attached onthe magnetic substance, and an insulating layer may be formed on thetransmission coil 210 or 210 and 220, but the embodiment is not limitedthereto.

Since current flows through the transmission coil 210 or 210 and 220,heat is generated. If such heat is not rapidly exhausted, the heatexerts an influence on the magnetic field induced by the transmissioncoil 210 or 210 and 220, so that power transferring efficiency may beultimately deteriorated.

To solve the problem, the heat sink 61 may be disposed between theprinted circuit board 65 and the magnetic substance 59. The magneticsubstrate 59, the heat sink 61 and the printed circuit substrate 65 maybe collectively coupled to each other, but the embodiment is not limitedthereto. For example, at least one screw may pass through the magneticsubstrate 59 and the heat sink 61 such that the at least one screw iscoupled to the printed circuit board 65. For example, the heat sink 61may be formed of anodized aluminum, but the embodiment is not limitedthereto.

The magnetic substrate 59 may make contact with of a top surface of theheat sink 61 and the printed circuit board 65 may make contact with abottom surface of the heat sink 61. The heat generated from thetransmission coil 210 or 210 and 220 may be transferred to the printedcircuit board 65 through the heat sink 61. When the heat transferred tothe printed circuit board 65 is not rapidly radiated to an outside, theheat may exert an influence on the electronic devices 69 mounted on theprinted circuit board.

To this end, at least one thermal pad 73 may be disposed between theelectronic device 69 and the inner surface of the second case 75. Thatis, an adhesive material may be formed on both sides of the thermal pad73, by which the electronic device 69 may be adhesive to one surface ofthe thermal pad 73 and the other surface of the thermal pad 73 may beadhesive to the inner surface of the second case 75. Thus, the heattransferred to the printed circuit board 65 may be transferred to thesecond case 75 through the electronic device 69 and the thermal pad 73,so that the heat may be radiated to an outside.

Nevertheless, when the charging operation is performed for a long time,there may be a limit to the radiation of the heat generated from thetransmission coil 210 or 210 and 220 from the printed circuit board 65to an outside through the thermal pad 73. To solve the above problem,the second case 75 may make contact with the heat sink 61.

The second case 75 may include a protrusion member 77 protruding inward,that is, in the direction close to the guide member 7. The second case75 may protrude toward the first case 33. The protrusion member 77 maybe formed on the printed circuit board 65 corresponding to an openingformed in the printed circuit board 65. For example, since the opening67 is formed on a central portion of the printed circuit board 65, theprotrusion member 77 may be also formed on the central portion of thesecond case 75. A thickness of the protrusion member 77 may be set bytaking into consideration the thicknesses of the printed circuit board65, the electronic device 69 and a space margin.

A thermal plate 79 may be disposed on a top surface of the protrusionmember 77. In addition, the top surface of the protrusion member 77 mayinclude an opening (not shown) and the thermal plate may be installedinto the opening. The top surface of the protrusion member 77 may makecontact with a rear surface of the heat sink 61 through the opening 67of the printed circuit board 65. The thermal plate 79 disposed on theprotrusion member 77 may make contact with the rear surface of the heatsink 61 through the opening 67 of the printed circuit board 65.

The thermal pad 71 may be disposed between the thermal plate 79 and theheat sink 61 in order to enhance the contact strength between thethermal plate 79 and the heat sink 61 and improve the thermaldissipation efficiency. That is, the heat sink 61 may make stablecontact with the thermal plate 79 of the protrusion member 77 by thethermal pad 71. Due to the thermal pad 71, the heat sink 61 is notseparated from the thermal plate 79 of the protrusion member 77.

Thus, the heat generated from the transmission coil 210 or 210 and 220may be transferred to the heat sink 61 and the heat transferred to theheat sink 61 may be transferred to the second case 75 through theprinted circuit board 65, the electronic device 69 and the thermal pad73.

In addition, the heat transferred to the heat sink 61 may be transferredto the thermal plate 79 disposed on the protrusion member 77 of thesecond case 75 through the thermal pad 71.

Such thermal transferring paths are arranged as follows:

(1) Transmission coil 210 or 210 and 220→Magnetic substance 59→Heat sink61→Printed circuit board 65→Electronic device 69→Thermal pad 73→Secondcase 75;

(2) Transmission coil 210 or 210 and 220→Magnetic substance 59→Heat sink61→Thermal pad 71→Thermal plate 79.

As described above, according to the embodiment, since the heat of thetransmission coil 210 or 210 and 220 is radiated through two paths, thethermal dissipation efficiency may maximized. Due to the maximization ofthe thermal dissipation efficiency, a magnetic field is stably generatedfrom the transmission coil 210 or 210 and 220, so that the powertransferring efficiency may be improved.

The first and second cases 33 and 75 may be coupled to each other byusing at least one screw. That is, at least one screw 49 may be coupledto the second case 75 through the coupling hole 47 of the first case 33.

The first and second elastic members 28 and 29 may be fixed to theinsides of the second and third recesses 42 and 43 of the secure member35 through an elastic member coupling member 51. The first and secondelastic members 28 and 29 may be fixed into the first and second regionsof the elastic member coupling member 51. The elastic member couplingmember 51 may be coupled to the secure member 35 by coupling at leastone screw 55 to the secure member 35 through the coupling hole 53.

The elastic member coupling member 51 may be detachably attached to thesecure member 35. Due to the detachable attachment, if necessary, thefirst and second elastic members 28 and 29 may be exchanged.

The wireless power receiver 400 according to the embodiment may beinstalled in a mobile terminal such as a mobile phone, a smart phone, alaptop computer, a digital broadcasting receiver, PDA (Personal DigitalAssistants), PMP (Portable Multimedia Player) or a navigation device.

However, it may be easily understood by those skilled in the art thatthe configuration according to the embodiment is applicable to a fixedterminal such as a digital TV or a desktop computer as well as themobile terminal.

According to the embodiment, a scheme of transmitting power throughelectromagnetic induction may signify a tightly coupling scheme having arelatively low Q value, and a scheme of transmitting power throughresonance may signify a loosely coupling scheme having a relatively highQ value.

The embodiment provides a supporter capable of maximizing wireless powertransmission efficiency.

The embodiment provides a support capable of stably fixing an object.

The embodiment provides a supporter capable of easily detaching anobject therefrom.

The embodiment provides capable of maximizing heat radiation efficiency.

According to the embodiment, there is provided a supporter including ahousing; a guide member formed at one side of the housing and having aninclined surface; a fixing member facing the guide member to fix anobject; and a transmission coil disposed in the housing to wirelesslytransmit power.

According to the embodiment, the wireless terminal wirelessly receivespower from the transmission coil of the supporter.

According to the embodiment, there are provided following advantages.

First, an object may be safely supported by disposing the guide memberof the housing to be inclined.

Secondly, since the fixing member is disposed to connect with thehousing such that a pressing pressure is generated toward the guidemember of the housing, a part of the object is always pressed while theobject is supported, so that the object may be fixed not to be shaken.

Thirdly, the transmission coil is parallel with the inclined guidemember, so that the power transmission efficiency of the object may beimproved.

Fourthly, the heat sink disposed at the low portion of the transmissioncoil makes contact with the thermal plate while passing through theprinted circuit board, so that the heat generated from the transmissioncoil may be rapidly radiated to an outside via the heat sink and thethermal plate, thereby improving the radiation efficiency.

Fifthly, the heat sink disposed to the low portion of the transmissioncoil makes contact with the printed circuit board and the electronicdevice mounted on the printed circuit board is attached onto the casethrough thermal pad, so that the heat generated from the transmissioncoil may be rapidly radiated to an outside through the heat sink, theprinted circuit board, the electronic device and the thermal plate,thereby improving the radiation efficiency.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to effect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A supporter comprising: a housing including atransmission coil to wirelessly transmit power; and a fixing memberdisposed to face a side surface of the housing and fixing a wirelessterminal when the wireless terminal is supported; and a secure memberdisposed at between the side surface of the housing and the fixingmember, wherein the side surface of the housing is disposed to face thetransmission coil and support the wireless terminal to stand up, whereinthe fixing member comprises a first support, a second support and apressing part, wherein the first support and the second support arebranched from the pressing part in a downward direction, and the firstand second support are spaced apart from each other in the downwarddirection such that an opening is formed between the first support andthe second support, wherein a diameter of the opening between the firstsupport and the second support is a first value, wherein a distancebetween a lower portion of the first support and a lower portion of thesecond support is a second value, and the first value is greater thanthe second value, wherein the pressing part contact the wirelessterminal when the wireless terminal is supported, wherein the securemember comprises a first recess having a shape recessed from one side ofthe secure member toward the side surface of the housing so that aportion of the wireless terminal is exposed when the wireless terminalis supported, wherein the opening is connected to the first recess, andwherein a width of the first recess is less than a diameter of theopening.
 2. The supporter of claim 1, wherein the secure member furthercomprises a second recess having a shape recessed downwardly on a sideof the first recess.
 3. The supporter of claim 1, wherein the fixingmember further comprises an inlet part extending from the pressing partwhile being bent to be gradually away from the side surface of thehousing.
 4. The supporter of claim 1, wherein the fixing member has arestoring force toward the side surface of the housing.
 5. The supporterof claim 1, wherein a height of the fixing member is lower than a heightof the side surface of the housing.
 6. The supporter of claim 1, whereina width of the fixing member is lower than a width of the side surfaceof the housing.
 7. The supporter of claim 1, wherein the fixing memberis moved closer to or away from the side surface of the housing byrotational movement of a rotation shaft.
 8. The supporter of claim 1,wherein the side surface of the housing comprises a guide member havingan inclined surface such that the wireless terminal is tilted andsupported.
 9. The supporter of claim 8, wherein the inclined surface isinclined at 5° or more about a normal line.
 10. The supporter of claim1, wherein a portion of the wireless terminal is exposed by the openingwhen the wireless terminal is supported.
 11. The supporter of claim 10,wherein a portion of a plane contacting the pressing part of thewireless terminal is exposed by the opening when the wireless terminalis supported.
 12. The supporter of claim 1, wherein a portion of thewireless terminal is exposed by an inlet part when the wireless terminalis supported.
 13. The supporter of claim 12, wherein a portion of aplane contacting the pressing part of the wireless terminal is exposedby the inlet part when the wireless terminal is supported.